Chris Urmson is head of the self-driving car project at Google, and as you may know, the Mountain View company just announced that the latest prototype of its car — the one that’s super adorable — is now on the roads of Mountain View. But one thing that many just can’t wrap their head around is how these cars can manage to navigate the roads themselves, without any human assistance. Urmson does a great job of explaining that in this TED Talk video…

Most tech-heads know that the cars rely on inch-perfect modelling of the specific streets they will use, the cars unable to drive anywhere else, but the piece revealed that this is just one of the challenges ahead … expand full story